Imaginary Picture of Kepler-1389 b

Display orbital revolution of Kepler-1389 b around the hoststar Kepler-1389
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Exoplanet Name : Kepler-1389 b
Alternate Name : "2MASS J19025218+4445303 b, K02931.01, KIC 8611257 b, KOI-2931 b, KOI-2931.01, WISE J190252.18+444530.1 b"
Status : Confirmed
Radius (Rjup / Re): 0.1580 (Rjup) 1.7710 (Rearth)
Mass (Mjup / Me): 0.0141 (Mjup) 4.4891 (Mearth)
Semi Major Axis / Orbital Distance Calculated 0.0000 (AU) 0.3911 (AU Est.)
Eccentricity : 0.0000
Orbital Period(Yrs) 0.2717
Orbital Period(Observed/Estimated) 99.25 (Days Obs.) 0.00 (Days Est.)
Surface Gravity (G Earth) 1.4312
Star Radiation at Atmospheric Boundary: 2498.9 (W/m2)
Measured Temperature (K) 0.0 (K)
Blackbody T 0.1(K) 315.6 (K)
Blackbody T 0.3(K) 296.3 (K)
Blackbody T 0.7(K) 239.8 (K)
Tidally Locked Blackbody T 0.1(K) 375.3 (K)
Tidally Locked Blackbody T 0.3(K) 352.4 (K)
Size Class: super-Earth-size
Mass Class:
Detection Type : Primary Transit
Mass Detection :
Radius Detection :
Habitability by Solar Eq. Astronomical Unit: Habitable
Habitability by Kopparapu: Not habitable
Star Name : Kepler-1389
Alternate Name : "2MASS J19025218+4445303, KIC 8611257, KOI-2931, WISE J190252.18+444530.1"
Star Distance(LY) : 1620.8
Stellar Radius(Rsun) : 0.7 (Rsun Measured)
Stellar Mass(Msun) : 0.8 (Msun Measured) 0.8 (Msun Estimated)
Star Age : 2.1 (GY)
Temperature : 4962 (K)
Spectral type : K1
UV portion[%]: 3.1
Visible portion[%]: 36.7
IR portion[%]: 60.3
Metalicity : -0.1
Absolute Magnitude: 4.8
Apparent Magnitude: 13.2
Right Ascension(RA) 285.7174
Declination (DEC) 44.7584
Hubble Space Telescope Guide Star Catalog (GSC) ID
Discovered by
Discovery Paper - Authors "Timothy D. Morton, Stephen T. Bryson, Jeffrey L. Coughlin, Jason F. Rowe, Ganesh Ravichandran, Erik A. Petigura, Michael R. Haas, and Natalie M. Batalha2"
Discovery Paper - Title FALSE POSITIVE PROBABILITIES FOR ALL KEPLER OBJECTS OF INTEREST: 1284 NEWLY VALIDATED PLANETS AND 428 LIKELY FALSE POSITIVES
Discovery Paper - Journal 0
Discovery Paper - URL 0
SIMBAD LINK http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Kepler-1389+&submit=SIMBAD+search
Open Exoplanet Database Link http://www.openexoplanetcatalogue.com/planet/Kepler-1389%20b/
Kepler-1389 b
Kepler-1389 b

  • Kepler-1389 b is an exoplanet orbiting the star Kepler-1389, located about 1620.8 light-years (496.9 pc) away from Solar System. Its discovery was publicly announced on 2016.
  • The host star Kepler-1389 has apparent magnitude of 13.2, with absolute magnitude of 4.8.
  • It is 0.8 times more massive and 0.7 times bigger compared with our Sun. The surface temperature is 4962 with its spectral types of K1
  • In this planetary system, the extrasolar planet Kepler-1389 b orbits around the star Kepler-1389 every 99.3 days with its orbital distance of 0.39 AU ( 58504549.7 km)
  • (Projected orbit of Kepler-1389 b around its host star Kepler-1389)


  • The Star Kepler-1389 's habitable zone is located at the following distance
  • Inner Boundary (the orbital distance at Venus's Equivalent Radiation ) : 0.382 AU ( 57212481.9 km)
  • Earth Boundary (the orbital distance at Earth's Equivalent Radiation) : 0.529 AU ( 79082601.4 km)
  • Outer Boundary (the orbital distance at Mars's Equivalent Radiation) : 0.806 AU ( 120504383.6 km)
  • Snow Line (the orbital distance at Snow Line Equivalent Radiation) : 1.185 AU ( 177327479.4 km)
  • Radiation at Planetary Boundary of Kepler-1389 b : 2498.86 W/m2

    (Habitable zone calculated based on SEAU(Solar Equivalent Astronomical Unit) around the star Kepler-1389)



  • Kopparapu Recent Venus for Star Kepler-1389 distance : 0.414 AU
  • Kopparapu Runaway Greenhouse for Earth-sized planet for Star Kepler-1389 distance : 0.525 AU
  • Kopparapu Runaway Greenhouse for Super-Earth-sized planet for Star Kepler-1389 distance : 0.507 AU
  • Kopparapu Runaway Greenhouse for Mars-sized planet for Star Kepler-1389 distance : 0.556 AU
  • Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1389 distance : 0.953 AU
  • Kopparapu Outer Boundary for Early Mars for Star Kepler-1389 distance : 1.005 AU

    (Habitable zone calculated based on Kopparapu et al.(2013) around the star Kepler-1389)



  • Original Kopparapu Recent Venus for Star Kepler-1389 distance : 0.410 AU
  • Original Kopparapu Runaway Greenhouse for Star Kepler-1389 distance : 0.541 AU
  • Original Kopparapu Moist Greenhouse for Star Kepler-1389 distance : 0.542 AU
  • Original Kopparapu Outer Boundary for Maximum Greenhouse for Star Kepler-1389 distance : 0.968 AU
  • Original Kopparapu Outer Boundary for Early Mars for Star Kepler-1389 distance : 1.007 AU

    (Habitable zone calculated based on Kopparapu et al.(Original) around the star Kepler-1389)



    (Position in Stellar Map of star Kepler-1389 and its Exoplanet Kepler-1389 b)



    (Zoomed position in Stellar Map of star Kepler-1389 and its Exoplanet Kepler-1389 b (zoom level 3))

    (Synthetic Spectrum of star Kepler-1389*)
    *Yamashiki YA et al. 2019 ApJ 881 114
    MUSCLES Paper I - France et al. 2016 ApJ 820 89
    MUSCLES Paper II- Youngblood et al. 2016 ApJ 824 101
    MUSCLES Paper III- Loyd et al. 2016 ApJ 824 102